Finding the Fourth Proportional to 389,714.18, 584,588.28 and 123,494.33

Step by Step Solution

1. Step 1: Write the proportion equation
   389,714.18 : 584,588.28 = 123,494.33 : x
2. Step 2: Convert to fraction form
   389,714.18/584,588.28 = 123,494.33/x
3. Step 3: Cross multiply
   389,714.18x = 584,588.28 × 123,494.33
4. Step 4: Simplify right side
   389,714.18x = 72,193,337,964.45
5. Step 5: Solve for x
   x = 72,193,337,964.45/389,714.18
6. Step 6: Final answer
   x = 185,246.89